CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Parenthetical (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges, tax	$ (201)	$ 264	$ 302
Unrecognized amounts from defined benefit pension plans, tax	$ 3,492	$ 47,413	$ 893